55781103050011 has 16 divisors (see below), whose sum is σ = 59133164451840. Its totient is φ = 52436945808000.

The previous prime is 55781103050003. The next prime is 55781103050033. The reversal of 55781103050011 is 11005030118755.

It is not a de Polignac number, because 55781103050011 - 2³ = 55781103050003 is a prime.

It is a super-2 number, since 2×55781103050011² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55781103050051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50231070 + ... + 51329548.

It is an arithmetic number, because the mean of its divisors is an integer number (3695822778240).

Almost surely, 2^{55781103050011} is an apocalyptic number.

55781103050011 is a deficient number, since it is larger than the sum of its proper divisors (3352061401829).

55781103050011 is a wasteful number, since it uses less digits than its factorization.

55781103050011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102074.

The product of its (nonzero) digits is 21000, while the sum is 37.

Adding to 55781103050011 its reverse (11005030118755), we get a palindrome (66786133168766).

The spelling of 55781103050011 in words is "fifty-five trillion, seven hundred eighty-one billion, one hundred three million, fifty thousand, eleven".